Uncertainty of the Results of the Radon Control in Housings. Part 2. Experimental Assessment of the Temporal Variations of Radon

Full-scale investigations have demonstrated that radon contained in soil air provides dominant influence on the university’s radon field formation. The change of radon volume activity in the university’s civil defense hideout and premises have strongly pronounced seasonal pattern with maximum values of radon concentration in July and August, and minimum values in March, April and November. Radon escaping from the soil surface in the summertime does not affect the radon field change in the university’s premises. The most precise estimation of radon annual average volume activity can be obtained when performing observations during a year. The substitution of this approach by the method of measurements with various duration leads to errors in the estimation of the normative parameter because of difficulties in registration of radon variations in various conditions.

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Researches of Radon Field Formation Indoors (through the Example of Far Eastern State Transport University)

Andreev

Atanova

Teslenko

et al. 2020

Safety in Technosphere

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Standardization of indoor radon measurements based on rational criterion for conformity assessment

Tsapalov,

Kiselev,

Kovler

et al. 2023

Radiac. gig. (2008)

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Significant temporal variations in radon are observed in any buildings, including unoccupied buildings with limited ventilation. This fact causes serious difficulties in radiation monitoring to assess the compliance of premises with the requirements of the normative, which limits the annual average level of radon in buildings. Therefore, neither at the national nor at the international level has yet been solved the problem of standardizing the indoor radon measurement if the test duration is less than a year. An analysis of approaches to radon measurement, including an assessment of the effectiveness of regulation, shows very significant differences between practices established in different countries. For example, in Russia, rapid (no more than 20 min) measurements are mainly used and mitigation measures to protect existing buildings from radon are practically not carried out. In European countries, mainly long-term (at least two months) measurements are used, while mitigation measures are still relatively rare, with the exception of the UK and Sweden. In the USA, short-term (2–7 days) measurements are widely used, which are not only carried out, but also paid for by residents themselves, including mitigation measures. However, despite the established approaches to indoor radon monitoring in Russia and the USA, there is a persistent distrust among specialists in the results of shortterm and, especially, rapid measurements. In this regard, a compromise approach is proposed to standardize radon measurements based on a rational criterion by applying fundamental ISO/IEC concepts such as “measurement uncertainty” and “conformity assessment”. The rational criterion for conformity assessment allows using measurements of different durations, providing a given reliability when making a decision. It also proposes a rationale for optimizing indoor radon monitoring through the participation of not only professional inspectors, but also the population itself due to the possibility of introducing simple methods and inexpensive radon devices within the rational criterion.

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Uncertainty of the Results of the Radon Control in Housings. Part 2. Experimental Assessment of the Temporal Variations of Radon

Cited by 2 publications

References 2 publications

Researches of Radon Field Formation Indoors (through the Example of Far Eastern State Transport University)

Researches of Radon Field Formation Indoors (through the Example of Far Eastern State Transport University)

Standardization of indoor radon measurements based on rational criterion for conformity assessment

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